US11617070B2 - Communication control device, communication control method and communication control system - Google Patents
Communication control device, communication control method and communication control system Download PDFInfo
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- US11617070B2 US11617070B2 US17/043,597 US201917043597A US11617070B2 US 11617070 B2 US11617070 B2 US 11617070B2 US 201917043597 A US201917043597 A US 201917043597A US 11617070 B2 US11617070 B2 US 11617070B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y10/00—Economic sectors
- G16Y10/75—Information technology; Communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to a communication control device, a communication control method and a communication control system.
- NPL 1 Takahiro Yamazaki, Kenji Shimizu, Atsushi Taniguchi, Keiji Shimizu, “Wireless Access Management System for Efficiently Accommodating Various Wireless Schemes for IoT-Proposal of Integrated Management of Wireless Access Virtualization”, IEICE, vol. 116 No. 508 MoNA 2016-48, pp. 309-314, March 2017
- an access point In order to enable a communication system in which communication is performed by appropriately determining a wireless scheme, an access point needs to acquire a wireless scheme file for implementing the determined wireless scheme each time.
- a configuration in which a wireless scheme file provided to the access point is managed by one management server requires a wireless file to be frequently downloaded by the access point, and thus a system load and a network load on the management server and the like increase. As a result, it is expected to take a long time to complete the implementation of the wireless scheme at the access point, and thus there is a difficulty in enabling the communication system.
- a configuration in which a wireless scheme file is stored in an access point side in advance is required to store all wireless scheme files corresponding to wireless schemes that can be determined.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a communication control device, a communication control method and a communication control system that can appropriately determine a communication scheme and perform communication.
- One aspect of the invention is a communication control apparatus including a communication parameter acquisition unit that acquires at least one second communication parameter that is a candidate for a first communication parameter indicating a communication parameter to be assigned to a communication apparatus and indicates a communication parameter suitable for regional characteristics indicating a communication environment in a region where the communication apparatus is installed, a setting file storage unit that stores a setting file corresponding to each second communication parameter, a setting file acquisition control unit that acquires the setting file and stores the acquired setting file in the setting file storage unit, and a communication parameter assignment unit that determines the first communication parameter from among the second communication parameters acquired by the communication parameter acquisition unit and assigns the determined first communication parameter to the communication apparatus.
- One aspect of the present invention is the communication control apparatus described above, in which the setting file acquisition control unit acquires only the setting file that is not stored in the setting file storage unit.
- One aspect of the present invention is the communication control apparatus described above, in which the setting file acquisition control unit deletes the setting files other than a setting file corresponding to the second communication parameter acquired by the communication parameter acquisition unit from among the setting files stored in the setting file storage unit.
- One aspect of the present invention is the communication control apparatus described above further including a regional characteristic communication parameter correspondence information storage unit that stores regional characteristic communication parameter correspondence information in which the communication apparatus, the regional characteristics, and the communication parameter suitable for the regional characteristics are associated.
- the communication parameter assignment unit determines the first communication parameter to be assigned to the communication apparatus based on the regional characteristic communication parameter correspondence information stored in the regional characteristic communication parameter correspondence information storage unit.
- One aspect of the present invention is the communication control apparatus described above, in which when the regional characteristic communication parameter correspondence information stored in the regional characteristic communication parameter correspondence information storage unit is updated, the communication parameter assignment unit determines the first communication parameter to be assigned to the communication apparatus based on the updated regional characteristic communication parameter correspondence information.
- One aspect of the present invention is the communication control apparatus described above, in which when the regional characteristic communication parameter correspondence information stored in the regional characteristic communication parameter correspondence information storage unit is updated, the communication parameter acquisition unit acquires the second communication parameter.
- One aspect of the present invention is the communication control apparatus described above, in which the communication parameter assignment unit determines the first communication parameter to be assigned to the communication apparatus based on communication state information indicating a communication state of communication in the communication apparatus.
- One aspect of the present invention is the communication control apparatus described above, in which the communication parameter acquisition unit acquires the second communication parameter based on the communication state information.
- One aspect of the present invention is the communication control apparatus described above further including a communication state measurement unit that measures the communication state of communication by the communication apparatus and generates the communication state information indicating the measured communication state.
- One aspect of the present invention is a communication control method including acquiring at least one second communication parameter that is a candidate for a first communication parameter indicating a communication parameter to be assigned to a communication apparatus and indicates a communication parameter suitable for regional characteristics indicating a communication environment in a region where the communication apparatus is installed, storing a setting file corresponding to each second communication parameter, a setting file acquisition control unit configured to acquire the setting file and cause the acquired setting file to be stored, and determining the first communication parameter from among the acquired second communication parameters and assigning the determined first communication parameter.
- One aspect of the present invention is a communication control system including a management apparatus and a communication control apparatus, in which the management apparatus includes a second communication parameter assignment unit configured to assign a second communication parameter that is a candidate for a first communication parameter indicating a communication parameter to be assigned to a communication apparatus and indicates a communication parameter suitable for regional characteristics indicating a communication environment in a region where the communication apparatus is installed, and a setting file transmission unit configured to transmit a setting file corresponding to the second communication parameter to the communication control apparatus in response to a request from the communication control apparatus, and the communication control apparatus includes a communication parameter acquisition unit configured to acquire at least one second communication parameter, a setting file storage unit configured to store the setting file corresponding to the second communication parameter, a setting file acquisition control unit configured to acquire the setting file and store the acquired setting file in the setting file storage unit, and a first communication parameter assignment unit configured to determine the first communication parameter from among the second communication parameters acquired by the communication parameter acquisition unit and assigns the determined first communication parameter to the communication apparatus.
- the management apparatus includes a second communication
- a communication control device capable of appropriately determining a communication scheme and performing communication can be provided.
- FIG. 1 is a schematic diagram illustrating an example of communication control by a communication control system of the related art.
- FIG. 2 is a diagram illustrating an example of various communication settings as components of a wireless scheme.
- FIG. 3 is a block diagram illustrating a functional configuration of a communication control system of the related art.
- FIG. 4 is a flowchart illustrating a flow of processing by the communication control system of the related art.
- FIG. 5 is a schematic diagram illustrating an example of communication control by a communication control system according to a first embodiment.
- FIG. 6 is a block diagram illustrating a functional configuration of the communication control system according to the first embodiment.
- FIG. 7 is a flowchart illustrating a flow of pre-processing by the communication control system according to the first embodiment.
- FIG. 8 is a flowchart illustrating the flow of pre-processing by the communication control system according to the first embodiment.
- FIG. 9 is a flowchart illustrating a flow of communication start processing performed by the communication control system according to the first embodiment.
- FIG. 10 is a flowchart illustrating the flow of communication start processing by the communication control system according to the first embodiment.
- FIG. 11 is a flowchart illustrating a flow of processing of changing global wireless scheme assignment based on a communication status by the communication control system according to the first embodiment.
- FIG. 12 is a flowchart illustrating a flow of processing of changing wireless scheme assignment by the communication control system according to the first embodiment based on a communication status, regional characteristics, a wireless environment, and the like.
- FIG. 13 is a diagram illustrating an example of a configuration of a setting pattern of a wireless scheme used by the communication control system according to the first embodiment.
- FIG. 14 is a diagram illustrating an example of suitability between regional characteristics and setting patterns.
- FIG. 15 is a diagram illustrating an example of a table that defines setting patterns assigned to regional characteristics.
- FIG. 16 is a block diagram illustrating a functional configuration of a communication control system according to a second embodiment.
- FIG. 17 is a diagram illustrating an example of assignment information stored in an assignment database (DB) of the communication control system according to the second embodiment.
- DB assignment database
- FIG. 18 is a flowchart illustrating a flow of pre-processing by the communication control system according to the second embodiment.
- FIG. 19 is a flowchart illustrating a flow of communication start processing by the communication control system according to the second embodiment.
- FIG. 20 is a flowchart illustrating a flow of processing of changing wireless scheme assignment based on regional characteristics and a wireless environment by the communication control system according to the second embodiment.
- an access point may be omitted and described as “AP” and a database may be omitted and described as “DB”.
- FIG. 1 is a schematic diagram illustrating an example of communication control by a communication control system of the related art.
- the communication control system of the related art includes an AP integrated controller 7 and a software wireless AP 8 .
- the AP integrated controller 7 and the software wireless AP 8 are communicably connected.
- the AP integrated controller 7 is communicably connected to each of a plurality of software wireless APs 8 , but for simplicity of description, FIG. 1 illustrates only one software wireless AP 8 .
- the software wireless AP 8 can determine a specific wireless scheme from among various types of wireless schemes by software wireless technology and provide a wireless communication service to a wireless communication terminal (not illustrated).
- the software wireless AP 8 provides, for example, a wireless communication service by a specific wireless scheme requested by a specific IoT service provider (not illustrated).
- the wireless scheme here is a parameter (communication parameter) that is implemented in the software wireless AP 8 based on a combination of various communication settings and that indicates the type of wireless communication service.
- the software wireless AP 8 In order for the software wireless AP 8 to provide a wireless communication service using a specific wireless scheme, it is necessary for the software wireless AP 8 to perform various communication settings corresponding to the wireless communication scheme.
- FIG. 2 is a diagram illustrating an example of various communication settings as components of a wireless scheme.
- setting items of various communication settings which are components of a wireless scheme, such as “primary modulation scheme”, “secondary modulation scheme”, “multiplexing scheme”, and “interference control technology”. Further, the setting contents of each setting item are as follows.
- Examples of the first modulation scheme include the following schemes.
- Examples of the secondary modulation scheme includes the following schemes.
- Examples of the multiplexing scheme include the following schemes.
- Examples of the interference control technology include the following schemes.
- the setting items and setting contents of various communication settings are not limited to the above contents.
- the communication scheme enabled by the combination of the setting contents selected for each of the above setting items is the wireless scheme here.
- a combination of setting contents in setting items of various communication settings may be referred to as a “setting pattern”.
- a combination of setting contents configured by selecting “ASK” as a primary modulation scheme, “DS” as a secondary modulation scheme, “TDMA” as a multiplexing scheme, and “ICIC” as an interference control technology is one setting pattern (for example, setting pattern A).
- a specific wireless communication service is provided by a wireless scheme enabled by the setting pattern (for example, the setting pattern A).
- the AP integrated controller 7 includes a global wireless scheme storage 70 that stores a setting file (hereinafter, referred to as a “wireless scheme file”) for implementing a wireless scheme based on each setting pattern in the software wireless AP 8 .
- a setting file hereinafter, referred to as a “wireless scheme file”
- the AP integrated controller 7 Upon acquiring a request for providing a wireless communication service from an IoT service provider, the AP integrated controller 7 determines a setting pattern based on the received request. The AP integrated controller 7 extracts a wireless file describing the determined setting pattern from the global wireless scheme storage 70 . The AP integrated controller 7 transmits the extracted wireless scheme file to the software wireless AP 8 .
- the software wireless AP 8 receives the wireless scheme file transmitted from the AP integrated controller 7 .
- the software wireless AP 8 implements a device configuration for providing a wireless communication service according to a specific wireless scheme requested by the IoT service provider by using the received wireless scheme file, by a software wireless technology. Accordingly, the software wireless AP 8 can provide a wireless communication service by the specific wireless scheme to a wireless communication terminal (not illustrated).
- FIG. 3 is a block diagram illustrating a functional configuration of a communication control system of the related art.
- the communication control system of the related art includes the AP integrated controller 7 and the plurality of software wireless APs 8 .
- the AP integrated controller 7 includes the global wireless scheme storage 70 , a global scheduler 71 , a global wireless AP assignment unit 72 , an AP management DB 73 , and a download control unit 74 .
- the software wireless AP 8 includes a wireless scheme file download unit 81 , a wireless scheme file setting unit 82 , a software unit 83 , a wireless scheme hardware setting download unit 84 , a wireless scheme hardware setting unit 85 , and a hardware unit 86 .
- the global wireless AP assignment unit 72 assigns a wireless scheme to the wireless scheme file download unit 81 and the wireless scheme hardware setting download unit 84 of the software wireless AP 8 based on the AP management information stored in the AP management DB 73 , via the global scheduler 71 .
- a specific wireless scheme for enabling a wireless communication service requested by the IoT service provider is assigned.
- the wireless scheme file download unit 81 downloads a wireless scheme file corresponding to the assigned wireless scheme from the global wireless scheme storage 70 of the AP integrated controller 7 .
- the download of the wireless file from the global wireless scheme storage 70 to the wireless scheme file download unit 81 is controlled by the download control unit 74 of the AP integrated controller 7 .
- the wireless scheme file download unit 81 outputs the downloaded wireless scheme file to the wireless scheme file setting unit 82 .
- the wireless scheme file setting unit 82 sets up the software unit 83 by using the input wireless scheme file.
- the wireless scheme hardware setting download unit 84 downloads wireless scheme hardware setting information corresponding to the assigned wireless scheme from the global wireless scheme storage 70 .
- the download of the wireless hardware setting information from the global wireless scheme storage 70 to the wireless scheme hardware setting download unit 84 is controlled by the download control unit 74 .
- the wireless scheme hardware setting download unit 84 outputs the downloaded wireless scheme hardware setting information to the wireless scheme hardware setting unit 85 .
- the wireless scheme hardware setting unit 85 sets up the hardware unit 86 by using the input wireless scheme hardware setting information.
- the software wireless AP 8 can provide a wireless communication service by a specific wireless scheme requested by the IoT service provider to a wireless communication terminal (not illustrated).
- each of the software wireless APs 8 needs to acquire each wireless scheme file for implementing the determined wireless scheme at each time.
- the download of the wireless scheme file by the software wireless AP 8 frequently occurs, and thus the system load and the network load on the AP integrated controller 7 increase. Accordingly, it is expected to take a long time for the software wireless AP 8 to complete the implementation of the wireless scheme.
- a configuration in which the wireless system file is stored in advance in the software wireless AP 8 side is required to store in advance all wireless scheme files corresponding to the wireless scheme that can be determined. In this case, it is difficult to secure the storage capacity of the wireless scheme file in each software wireless AP 8 and to update the wireless scheme file stored in each software wireless AP 8 side.
- FIG. 4 is a flowchart illustrating a flow of processing by the communication control system of the related art.
- the global wireless AP assignment unit 72 of the AP integrated controller 7 acquires information indicating a service deployment request from the IoT service provider (step S 001 ). Upon acquiring information indicating a service deployment request, the global wireless AP assignment unit 72 assigns a specific wireless scheme for enabling the service deployment request to the wireless scheme file download unit 81 and the wireless scheme hardware setting download unit 84 of the software wireless AP 8 (step S 002 ).
- the wireless scheme file download unit 81 downloads a wireless scheme file corresponding to the assigned wireless scheme from the global wireless scheme storage 70 of the AP integrated controller 7 .
- the wireless scheme hardware setting download unit 84 downloads wireless scheme hardware setting information corresponding to the assigned wireless scheme from the global wireless scheme storage 70 (step S 003 ).
- the wireless scheme file setting unit 82 sets up the software unit 83 by using the wireless scheme file downloaded by the wireless scheme file download unit 81 .
- the wireless scheme hardware setting unit 85 sets up the hardware unit 86 by using the wireless scheme hardware setting information downloaded by the wireless scheme hardware setting download unit 84 (step S 004 ).
- FIG. 5 is a schematic diagram illustrating an example of communication control by the communication control system Sa according to the first embodiment.
- the communication control system Sa includes an AP integrated controller 1 (management apparatus), a communication control apparatus 2 a (communication control device), and a software wireless AP 3 (communication apparatus).
- AP integrated controller 1 management apparatus
- communication control apparatus 2 a communication control device
- software wireless AP 3 communication apparatus
- the AP integrated controller 1 and the software wireless AP 3 are communicably connected via the communication control apparatus 2 a .
- the AP integrated controller 1 is communicably connected to each of a plurality of communication control apparatuses 2 a , but for simplicity of description, FIG. 5 illustrates only one communication control apparatus 2 a and one software radio AP 3 that controls the communication control apparatus 2 a.
- the software wireless AP 3 can implement a specific wireless scheme from among various types of wireless schemes by software wireless technology and provide a wireless communication service to a wireless communication terminal (not illustrated).
- the software wireless AP 3 is used, for example, in common by a plurality of IoT service providers, appropriately determines a wireless scheme according to a request for providing a wireless communication service from each IoT service provider, and provides a wireless communication service according to the determined wireless scheme.
- the AP integrated controller 1 includes a global wireless scheme storage 10 that stores a wireless scheme file for implementing the wireless scheme based on each setting pattern in the software wireless AP 3 .
- the AP integrated controller 1 acquires, from the communication control apparatus 2 a , information indicating regional characteristics indicating a communication environment and a wireless environment in a region where the software wireless AP 3 to be controlled is installed in advance (for example, periodically).
- the AP integrated controller 1 rearranges a plurality of wireless system files stored in the global wireless scheme storage 10 based on the acquired information indicating the regional characteristics and the wireless environment.
- the AP integrated controller 1 extracts the top N wireless scheme files from among the rearranged wireless system files.
- the AP integrated controller 1 transmits the extracted upper N wireless scheme files to the communication control apparatus 2 a.
- the communication control apparatus 2 a acquires the top N wireless scheme files transmitted from the AP integrated controller 1 .
- the communication control apparatus 2 a includes a local wireless scheme storage 20 a that stores the acquired upper N wireless scheme files.
- the communication control apparatus 2 a stores the acquired upper N wireless scheme files in the local wireless scheme storage 20 a.
- the AP integrated controller 1 Upon receiving a request for providing a wireless communication service from the IoT service provider, the AP integrated controller 1 transmits the received request to the communication control apparatus 2 a .
- the communication control apparatus 2 a receives the request for providing a wireless communication service from the IoT service provider, transmitted from the AP integrated controller 1 .
- the communication control apparatus 2 a determines a setting pattern based on the received request.
- the AP integrated controller 1 extracts a wireless scheme file describing the determined setting pattern from the local wireless scheme storage 20 a .
- the communication control apparatus 2 a transmits the extracted wireless scheme file to the software wireless AP 3 .
- the software wireless AP 3 receives the wireless scheme file transmitted from the communication control apparatus 2 a .
- the software wireless AP 3 implements a device configuration for providing a wireless communication service according to a specific wireless scheme requested by the IoT service provider by using the received wireless scheme file, by a software wireless technology. Accordingly, the software wireless AP 3 can provide a wireless communication service by the specific wireless scheme to a wireless communication terminal (not illustrated).
- the communication control apparatus 2 a may measure the communication status (for example, radio wave propagation status) of the software wireless AP 3 to be controlled. In this case, the communication control apparatus 2 a determines a setting pattern based on the measured communication status and a request for providing a wireless communication service from the IoT operator.
- each communication control apparatus 2 a is installed near the software wireless AP 3 to be controlled by each communication control apparatus 2 , respectively. This is because it is possible to expect a reduction in communication cost associated with downloading a wireless scheme file from the communication control apparatus 2 a to the software wireless AP 3 , and an improvement in measurement accuracy of a communication status by installing the communication control apparatus 2 a near the software wireless AP 3 .
- the installation location of the communication control apparatus 2 a is not limited to the vicinity of the software wireless AP 3 .
- FIG. 6 is a block diagram illustrating a functional configuration of the communication control system Sa according to the first embodiment.
- the communication control system Sa includes an AP integrated controller 1 , a plurality of communication control apparatuses 2 a , and a plurality of software wireless APs 3 to be controlled by each communication control apparatus 2 a.
- the AP integrated controller 1 includes a global wireless scheme storage 10 , a global scheduler 11 , a global wireless AP assignment unit 12 , an AP management DB 13 , and a wireless scheme file download control unit 14 .
- the communication control apparatus 2 a includes a local wireless scheme storage 20 a , a local scheduler 21 a , a local wireless AP assignment unit 22 a , a regional characteristics/wireless scheme mapping DB 23 a , a cache control unit 24 a , and an environment measurement unit 25 a.
- the software wireless AP 3 includes a wireless scheme file download unit 31 , a wireless scheme file setting unit 32 , a software unit 33 , a wireless scheme hardware setting download unit 34 , a wireless scheme hardware setting unit 35 , and a hardware unit 36 .
- the wireless scheme file download control unit 14 acquires in advance (for example, periodically), information indicating regional characteristics indicating a communication environment and a wireless environment (communication parameter) in a region where the software wireless AP 3 to be controlled is installed, from the regional characteristics/wireless scheme mapping DB 23 a (regional characteristic communication parameter correspondence information storage unit) via the cache control unit 24 a (setting file acquisition control unit) of the communication control apparatus 2 a.
- the wireless scheme file download control unit 14 sorts the plurality of wireless scheme files stored in the global wireless scheme storage 10 based on the acquired information indicating the regional characteristics and the wireless environment.
- the wireless scheme system file download control unit 14 extracts the top N wireless system files from the rearranged wireless scheme system files.
- the wireless scheme file download control unit 14 transmits the extracted upper N wireless scheme file to the communication control apparatus 2 a.
- the communication control apparatus 2 a acquires the upper N wireless scheme files (setting files) transmitted from the AP integrated controller 1 .
- the communication control apparatus 2 a stores the acquired upper N wireless scheme files in the local wireless scheme storage 20 a (setting files storage unit).
- the global wireless AP assignment unit 12 Upon receiving a request for providing a wireless communication service from the IoT operator, the global wireless AP assignment unit 12 transmits the received request to the local scheduler 21 a of the communication control apparatus 2 a via the global scheduler 11 , based on the AP management information stored in the AP management DB 13 .
- the local scheduler 21 a receives the request for providing a wireless communication service from the IoT operator, transmitted from the AP integrated controller 1 .
- the local wireless AP assignment unit 22 a determines a setting pattern based on the received request.
- the local wireless AP assignment unit 22 a (communication parameter assignment unit) assigns the wireless scheme (first communication parameter) corresponding to the wireless scheme file in which the determined setting pattern is described, from the local wireless scheme storage 20 a to the wireless scheme file download unit 31 and the wireless scheme hardware setting download unit 34 of the software wireless AP 3 via the local scheduler 21 a.
- the wireless scheme file download unit 31 downloads a wireless scheme file corresponding to the assigned wireless scheme from the local wireless scheme storage 20 a of the communication control apparatus 2 a.
- the wireless scheme file download unit 31 outputs the downloaded wireless scheme file to the wireless scheme file setting unit 32 .
- the wireless scheme file setting unit 32 sets up the software unit 33 by using the input wireless scheme file.
- the wireless scheme hardware setting download unit 34 downloads wireless scheme hardware setting information corresponding to the assigned wireless scheme from the global wireless scheme storage 20 a.
- the wireless scheme hardware setting download unit 34 outputs the downloaded wireless scheme hardware setting information to the wireless scheme hardware setting unit 35 .
- the wireless scheme hardware setting unit 35 sets up the hardware unit 36 by using the input wireless scheme hardware setting information.
- the software wireless AP 3 can provide a wireless communication service by a specific wireless scheme requested by the IoT operator to a wireless communication terminal (not illustrated).
- the communication control apparatus 2 a may measure the communication status (for example, radio wave propagation status) of the software wireless AP 3 to be controlled.
- the cache control unit 24 a of the communication control apparatus 2 a causes the environment measurement unit 25 a (communication state measurement unit) to measure the communication status of the software wireless AP 3 to be controlled.
- the local scheduler 21 a receives a request for providing a wireless communication service from the IoT operator
- the local wireless AP assignment unit 22 a determines a setting pattern based on the received request and information (communication state information) indicating the communication status measured by the environment measurement unit 25 a.
- each communication control apparatus 2 a has the configuration including the environment measurement unit 25 a , but the configuration is not limited to this configuration.
- the environment measurement unit 25 a may be configured to be provided in, for example, each software wireless AP 3 or another apparatus installed near each software wireless AP 3 .
- the processing by the communication control apparatus 2 a is divided into two types of processing.
- the two types of processing are pre-processing in which a plurality of wireless scheme files are downloaded from the AP integrated controller 1 to the communication control apparatus 2 a (hereinafter, referred to as “pre-processing”) and processing in which a specific wireless scheme is assigned to a software wireless AP based on a request from the IoT service provider (hereinafter, referred to as “communication start processing”).
- FIG. 7 and FIG. 8 are flowcharts illustrating the flow of the pre-processing by the communication control system Sa according to the first embodiment of the present invention. First, a description will be given with reference to FIG. 7 .
- the global wireless AP assignment unit 12 receives a service deployment request from the IoT service provider (step S 101 ).
- the global wireless AP assignment unit 12 assigns N wireless schemes (second communication parameters) to the software wireless AP 3 based on the received request (step S 102 ).
- the N wireless systems (second communication parameters) assigned here are wireless schemes that are candidates for a wireless scheme (first communication parameter) to be assigned to the software AP 3 (communication apparatus).
- the local scheduler 21 a (communication parameter acquisition unit) of the communication control apparatus 2 a acquires N wireless schemes (second communication parameters) assigned to the software wireless AP 3
- the local wireless AP assignment unit 22 a downloads wireless scheme files (setting files) corresponding to the assigned N wireless schemes and stores the files in the local wireless scheme storage 20 a (step S 103 ).
- FIG. 8 illustrates the processing of step S 102 in the flowchart illustrated in FIG. 7 in more detail.
- the global wireless AP assignment unit 12 acquires, from the communication control apparatus 2 a , information indicating regional characteristics and information indicating a wireless environment corresponding to the software wireless AP 3 to be controlled (step S 1021 ).
- the global wireless AP assignment unit 12 rearranges the plurality of wireless scheme files stored in the global wireless scheme storage 10 based on the acquired information indicating the regional characteristics and the information indicating the wireless environment (step S 1022 ).
- the AP integrated controller 1 extracts the top N wireless scheme files from among the rearranged wireless system files (step S 1023 ).
- FIG. 9 and FIG. 10 are flowcharts illustrating the flow of communication start processing by the communication control system Sa according to the first embodiment of the present invention. First, a description will be given with reference to FIG. 9 .
- the local wireless AP assignment unit 22 a determines a specific wireless scheme to be assigned to the software wireless AP 3 to be controlled based on the information indicating the regional characteristics and the information indicating the wireless environment, from a plurality of wireless schemes (second communication parameters) respectively corresponding to the plurality of wireless scheme files stored in the local wireless scheme storage 20 a .
- the local wireless AP assignment unit 22 a assigns the determined wireless scheme (first communication parameter) to the controlled software wireless AP 3 (communication apparatus) (step S 201 ).
- the wireless scheme file download unit 31 downloads a wireless scheme file corresponding to the assigned wireless scheme from the local wireless scheme storage 20 .
- the wireless scheme hardware setting download unit 34 downloads wireless scheme hardware setting information corresponding to the assigned wireless scheme from the global wireless scheme storage 30 .
- the wireless scheme file setting unit 32 sets up the software unit 33 by using the wireless scheme file downloaded by the wireless scheme file download unit 31 .
- the wireless scheme hardware setting unit 35 sets up the hardware unit 36 by using the wireless scheme hardware setting information downloaded by the wireless scheme hardware setting download unit 34 (step S 202 ).
- the flowchart illustrated in FIG. 10 illustrates the processing of step S 201 in the flowchart illustrated in FIG. 9 in more detail.
- the environment measurement unit 25 a measures the communication status (for example, radio wave propagation status) (step S 2012 ) and generates information (communication status information) indicating the measurement result, and the local wireless AP assignment unit 22 a acquires information (communication state information) indicating the measurement result of the communication status (step S 2013 ).
- the environment measurement unit 25 a may predict a future communication status from a past communication status and output the predicted value to the local wireless AP assignment unit 22 a.
- the local wireless AP assignment unit 22 a acquires the demographic characteristics, the service characteristics, and the mobility characteristics of the people and things from the regional characteristics/wireless scheme mapping DB 23 a (step S 2015 ).
- the local wireless AP assignment unit 22 a determines a wireless scheme to be assigned to the software wireless AP 3 to be controlled based on the acquired information (for example, information indicating the measurement result of the communication status measured by the environment measurement unit 25 a , and information acquired from the regional characteristics/wireless scheme mapping DB 23 a ) (step S 2016 ).
- the processing from L 2 s to L 2 e in FIG. 10 is repeatedly executed the number of times (N times) corresponding to the N wireless scheme files stored in the local wireless scheme storage 20 a.
- the wireless scheme file download unit 31 confirms the wireless scheme file stored in the local wireless scheme storage 20 a and downloads the wireless scheme file from the local wireless scheme storage 20 a if the confirmed wireless scheme file is a wireless scheme file corresponding to the assigned wireless scheme (YES in step S 2017 ) (step S 2018 ).
- FIG. 11 is a flowchart illustrating a flow of processing of changing global wireless scheme assignment based on a communication status by the communication control system Sa according to the first embodiment.
- the flowchart of FIG. 11 illustrates a flow of processing when a communication status (for example, a radio wave propagation status) measured by the environment measurement unit 25 a changes.
- a communication status for example, a radio wave propagation status
- the environment measurement unit 25 a detects a change in the communication status (step S 301 ).
- the local scheduler 21 a requests the global wireless AP assignment unit 12 to change the wireless scheme (step S 302 ).
- the global wireless AP assignment unit 12 assigns N wireless scheme files to be assigned to the software wireless AP 3 (step S 303 ).
- the wireless scheme file download unit 31 confirms whether a wireless scheme file corresponding to the assigned wireless scheme exists in the local wireless scheme storage 20 a . If the wireless scheme file corresponding to the assigned wireless scheme does not exist in the local wireless scheme storage 20 a (No in step S 304 ), the cache control unit 24 a downloads the wireless scheme file from the global wireless scheme storage 10 (step S 305 ).
- the wireless scheme file stored in the local wireless scheme storage 20 a is updated.
- the cache control unit 24 a may delete the wireless scheme file (wireless scheme file other than the wireless scheme file corresponding to the assigned wireless scheme) from the local wireless scheme storage 20 a.
- FIG. 12 is a flowchart illustrating a flow of processing of changing wireless scheme assignment by the communication control system Sa according to the first embodiment of the present invention based on a communication status, regional characteristics, a wireless environment, and the like.
- the flowchart of FIG. 12 illustrates a flow of processing in a case where there is a change in the communication status (for example, radio wave propagation status) or the regional characteristics and wireless environment in a state where the communication in the wireless communication service provided by the software wireless AP 3 is continued.
- the environment measurement unit 25 a measures a communication status (for example, a radio wave propagation status) (step S 401 ).
- the local wireless AP assignment unit 22 a acquires the measurement result of the communication status (step S 404 ).
- the local wireless AP assignment unit 22 a acquires information indicating the demographic characteristics, the service characteristics, and the mobility characteristics of people and things from the regional characteristics/wireless scheme mapping DB 23 a (step S 406 ).
- the local wireless AP assignment unit 22 a determines a wireless scheme to be assigned to the software wireless AP 3 based on the acquired information (step S 407 ).
- the local wireless AP assignment unit 22 a acquires information indicating the demographic characteristics, the service characteristics, and the mobility characteristics of people and things from the regional characteristics/wireless scheme mapping DB 23 a (step S 406 ).
- the local wireless AP assignment unit 22 a determines a wireless scheme to be assigned to the software wireless AP 3 based on the acquired information (step S 407 ).
- the wireless scheme file download unit 31 confirms the wireless scheme file stored in the local wireless scheme storage 20 a and downloads the wireless scheme file from the local wireless scheme storage 20 a if the confirmed wireless scheme file is a wireless scheme file corresponding to the assigned wireless scheme (YES in step S 408 ) (step S 409 ).
- the wireless scheme file setting unit 32 sets up the software unit 33 by using the wireless scheme file downloaded by the wireless scheme file download unit 31 .
- the wireless scheme hardware setting unit 35 sets up the hardware unit 36 by using the wireless scheme hardware setting information downloaded by the wireless scheme hardware setting download unit 34 (step S 410 ).
- FIG. 13 is a diagram illustrating an example of a configuration of the setting pattern of a wireless scheme used by the communication control system Sa according to the first embodiment of the present invention.
- each setting pattern is information configured by a combination of setting contents in the setting items of various communication settings illustrated in FIG. 2 .
- the “setting pattern A” is information configured by selecting “ASK” as a primary modulation scheme, “DS” as a secondary modulation scheme, “TDMA” as a multiplexing scheme, and “ICIC” as an interference control technology.
- FIG. 14 is a diagram illustrating an example of suitability between regional characteristics and setting patterns.
- a circle indicates that a setting pattern is suitable for regional characteristics, and a circle indicates that the setting pattern is not suitable for the regional characteristics.
- the wireless scheme based on “setting pattern A” has the following suitability for each of the following regions.
- FIG. 15 is a diagram illustrating an example of a table that defines setting patterns assigned to regional characteristics.
- a table as illustrated in FIG. 15 is created in advance based on the suitability between the regional characteristics and the setting patterns as illustrated in FIG. 14 .
- the local wireless AP assignment unit 22 a assigns a wireless scheme based on the acquired information indicating the regional characteristics and a table created in advance as illustrated in FIG. 15 .
- a wireless scheme based on the setting pattern A is assigned to the software wireless AP 3 installed in a region having regional characteristics such as “mobility characteristics” being high speed (that is, a region where many wireless communication terminals move at high speeds), “delay requirement” being high, “communication capacity” being moderate (and bidirectional communication required), “peak data amount” being small, a small number of devices (the number of wireless communication terminals), and the like.
- FIG. 16 is a block diagram illustrating a functional configuration of the communication control system Sb according to the second embodiment of the present invention.
- the communication control system Sb includes an AP integrated controller 1 , a plurality of communication control apparatuses 2 b (communication control device), and a plurality of software wireless APs 3 to be controlled by each communication control apparatus 2 b.
- the AP integrated controller 1 includes a global wireless scheme storage 10 , a global scheduler 11 , a global wireless AP assignment unit 12 , an AP management DB 13 , and a wireless scheme file download control unit 14 .
- the communication control apparatus 2 b includes a local wireless scheme storage 20 b , a local scheduler 21 b , a regional characteristics/wireless scheme mapping DB 23 b , a cache control unit 24 b , and an assignment DB 26 b.
- the software wireless AP 3 includes a wireless scheme file download unit 31 , a wireless scheme file setting unit 32 , a software unit 33 , a wireless scheme hardware setting download unit 34 , a wireless scheme hardware setting unit 35 , and a hardware unit 36 .
- the communication control system Sb according to the second embodiment differs from the communication control system Sa according to the first embodiment in that the communication control system Sb includes the communication control apparatus 2 b instead of the communication control apparatus 2 a.
- the difference between the communication control apparatus 2 b and the communication control apparatus 2 a is that the communication control apparatus 2 b does not include the local wireless AP assignment unit 22 a and the environment measurement unit 25 a , but includes an assignment DB 26 b.
- the assignment DB 26 b stores assignment information indicating the wireless scheme assigned by the global wireless AP assignment unit 12 .
- a configuration in which the software wireless AP 3 is periodically set based on the wireless scheme stored in the assignment DB 26 b may be employed.
- FIG. 17 is a diagram illustrating an example of assignment information stored in the assignment DB 26 b of the communication control system Sb according to the second embodiment of the present invention.
- the assignment information is information in which a setting pattern based on a wireless scheme assigned in the past and a number are associated with each other.
- the flow of processing by the communication control apparatus 2 b will be described with reference to drawings.
- the processing by the communication control apparatus 2 b according to the second embodiment is divided into pre-processing and communication start processing.
- FIG. 18 is a flowchart illustrating the flow of the pre-processing by the communication control system Sb according to the second embodiment of the present invention.
- the global wireless AP assignment unit 12 acquires, from the communication control apparatus 2 b , information indicating regional characteristics and information indicating a wireless environment corresponding to the software wireless AP 3 to be controlled (step S 501 ).
- the global wireless AP assignment unit 12 rearranges the plurality of wireless scheme files stored in the global wireless scheme storage 10 based on the acquired information indicating the regional characteristics and the information indicating the wireless environment (step S 502 ).
- the AP integrated controller 1 extracts the top N wireless scheme files from among the rearranged wireless system files (step S 1023 ).
- the global wireless AP assignment unit 12 saves the extracted top N wireless scheme files in the assignment DB 26 b (step S 504 ).
- the communication control system Sa is a communication control system including the AP integrated controller 7 (management apparatus) and the communication control apparatus 2 a.
- the AP integrated controller 7 includes a global wireless AP assignment unit 12 (communication parameter transmission unit) and a wireless scheme file download control unit 14 (setting file transmission unit).
- the global wireless AP assignment unit 12 (communication parameter transmission unit) assigns at least one wireless scheme (second communication parameter) that is a candidate for a wireless scheme (first communication parameter) to be assigned to the software wireless AP 3 (communication apparatus) and that is suitable for regional characteristics indicating a communication environment in a region where the software wireless AP 3 (communication apparatus) is installed.
- the wireless scheme file download control unit 14 (setting file transmission unit) transmits a wireless scheme (setting file) corresponding to at least one assigned wireless scheme (second communication parameter) to the communication control apparatus 2 a.
- the communication control apparatus 2 a includes a local scheduler 21 a (communication parameter acquisition unit), a local wireless scheme storage 20 a (setting file storage unit), a cache control unit 24 a (setting file acquisition control unit), and a local wireless AP assignment unit 22 a (communication parameter assignment unit).
- the local scheduler 21 a (communication parameter acquisition unit) acquires at least one wireless scheme (second communication parameter) that is a candidate for a wireless scheme (first communication parameter) to be assigned to the software wireless AP 3 (communication apparatus) and that is suitable for regional characteristics indicating a communication environment in a region where the software wireless AP 3 (communication apparatus) is installed.
- the local wireless scheme storage 20 a (setting file storage unit) stores a wireless scheme file (setting file) corresponding to the acquired wireless scheme (second communication parameter).
- the cache control unit 24 a (setting file acquisition control unit) acquires a wireless scheme file (setting file) corresponding to the acquired wireless scheme (second communication parameter) and stores the acquired wireless system file (setting file) in the local wireless scheme storage 20 a (setting file storage unit).
- the local wireless AP assignment unit 22 a (communication parameter assignment unit) determines a wireless scheme (first communication parameter) to be assigned to the software wireless AP 3 (communication apparatus) from among the wireless schemes (second communication parameters) acquired by the local scheduler 21 a (communication parameter acquisition unit) and assigns the determined wireless scheme (first communication parameter) to the software wireless AP 3 (communication apparatus).
- a wireless scheme file suitable for a region is selected in advance, and the selected wireless scheme file is distributed (cached) in the communication control apparatus 2 a corresponding to each software wireless AP 3 .
- the wireless scheme is appropriately determined by the combination of the setting contents of the communication setting items such as the primary modulation scheme, the secondary modulation scheme, the multiplexing scheme, and the interference control technology, and the communication is performed.
- all the wireless scheme files are not downloaded to each software wireless AP 3 but are appropriately distributed (cached).
- the system load and the network load at the time of downloading the wireless scheme file are reduced, and the optimum wireless scheme according to the regional characteristics is appropriately determined and communication is performed.
- the pre-processing of the communication control system Sb according to the second embodiment differs from the pre-processing by the communication control system Sa according to the first embodiment described with reference to FIG. 8 in that the global wireless AP assignment unit 12 stores the wireless scheme file in the assignment DB 26 b as described above.
- FIG. 19 is a flowchart illustrating the flow of communication start processing by the communication control system Sb according to the second embodiment of the present invention.
- the assignment DB 26 b acquires a setting pattern corresponding to the assigned wireless scheme from the regional characteristics/wireless scheme mapping DB 23 a (step S 602 ).
- the assignment DB 26 b determines a wireless scheme to be assigned to the software wireless AP 3 to be controlled (step S 603 ).
- the wireless scheme file download unit 31 confirms the wireless scheme file stored in the local wireless scheme storage 20 a and downloads the wireless scheme file from the local wireless scheme storage 20 a if the confirmed wireless scheme file is a wireless scheme file corresponding to the assigned wireless scheme (YES in step S 604 ) (step S 605 ).
- the wireless scheme file download unit 31 downloads a wireless scheme file corresponding to the assigned wireless scheme from the local wireless scheme storage 20 .
- the wireless scheme hardware setting download unit 34 downloads wireless scheme hardware setting information corresponding to the assigned wireless scheme from the global wireless scheme storage 30 .
- the wireless scheme file setting unit 32 sets up the software unit 33 by using the wireless scheme file downloaded by the wireless scheme file download unit 31 .
- the wireless scheme hardware setting unit 35 sets the hardware unit 36 by using wireless scheme hardware setting information downloaded by the wireless scheme hardware setting download unit 34 (step S 606 ).
- FIG. 20 is a flowchart illustrating a flow of processing of changing a wireless scheme assignment based on regional characteristics and a wireless environment by the communication control system Sb according to the second embodiment of the present invention.
- the flowchart of FIG. 20 illustrates a processing flow when there is a change in the regional characteristics and the wireless environment in a state where the communication in the wireless communication service provided by the software wireless AP 3 is continued.
- the assignment DB 26 b acquires the setting pattern of the assigned wireless scheme from the regional characteristics/wireless scheme mapping DB 23 a (step S 702 ).
- the assignment DB 26 b determines a wireless scheme to be assigned to the software wireless AP 3 based on the setting pattern of the acquired wireless scheme (step S 407 ).
- the wireless scheme file download unit 31 confirms the wireless scheme file stored in the local wireless scheme storage 20 a and downloads the wireless scheme file from the local wireless scheme storage 20 a if the confirmed wireless scheme file is a wireless scheme file corresponding to the assigned wireless scheme (YES in step S 704 ) (step S 705 ).
- the wireless scheme file setting unit 32 sets up the software unit 33 by using the wireless scheme file downloaded by the wireless scheme file download unit 31 .
- the wireless scheme hardware setting unit 35 sets the hardware unit 36 by using the wireless scheme hardware setting information downloaded by the wireless scheme hardware setting download unit 34 (step S 706 ).
- the communication control apparatus 2 a and the communication control apparatus 2 b can appropriately determine a communication scheme and perform communication.
- Part or all of the communication control apparatus 2 a and the communication control apparatus 2 b in the above-described embodiments may be enabled by a computer. In that case, this configuration may be enabled by recording a program for implementing such control functions on a computer-readable recording medium and causing a computer system to read the program recorded on the recording medium for execution.
- the “computer system” here is a computer system built in the communication control apparatus 2 a and the communication control apparatus 2 b , and includes hardware such as an OS and peripheral devices.
- the “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage apparatus such as a hard disk installed in a computer system.
- the “computer-readable recording medium” may include a medium that dynamically retains a program for a short period of time, such as a communication line that is used to transmit the program over a network such as the Internet or over a communication line such as a telephone line, and may also include a medium that retains a program for a certain period of time, such as a volatile memory within the computer system for functioning as a server or a client in such a case.
- the program may be configured to realize some of the functions described above, and also may be configured to be capable of implementing the functions described above in combination with a program already recorded in the computer system.
- part or all of the communication control apparatus 2 a and the communication control apparatus 2 b in the above-described embodiments may be enabled as an integrated circuit such as a large scale integration (LSI).
- LSI large scale integration
- Each functional block of the communication control apparatus 2 a and the communication control apparatus 2 b may be individually formed into a processor, or a part or all may be integrated into a processor.
- a circuit integration technique is not limited to the LSI, and a part of or all of the transfer apparatus may be enabled with a dedicated circuit or a general-purpose processor. In a case that with advances in semiconductor technology, a circuit integration technology with which an LSI is replaced appears, an integrated circuit based on the technology may be used.
Abstract
Description
-
- Amplitude shift keying (ASK) scheme
- Frequency shift keying (FSK) scheme
- Binary phase shift keying (BPSK) scheme
- Quadrature phase shift keying (QPSK) scheme
- Quadrature amplitude modulation (64QAM) scheme
-
- Direct sequence (DS) scheme
- Frequency hopping (FH) scheme
- Orthogonal frequency division multiplexing (OFDM) scheme
- Filter bank multi-carrier (FBMC) scheme
- Universal filtered-multi-carrier (UFMC) scheme
- Generalized frequency division multiplex (GFDM) scheme
-
- Time division multiple access (TDMA) scheme
- Frequency division multiple access (FDMA) scheme
- Code division multiple access (CDMA) scheme
- Non-orthogonal multiple access (NOMA)
- Sparse-code multiple access (SCMA) scheme
- Packet division multiple access (PDMA) scheme
- Space division multiple access (SDMA) scheme
-
- Inter-cell interference coordination (ICIC) technology
- Successive interference cancellation (SIC) technology
- Interference rejection combining (IRC) technology
- Coordinated multi-point (CoMP) technology
- Beam forming technology
- Maximum likelihood detection (MLD) technology
-
- Low suitability for a region where many wireless communication terminals have a long moving distance.
- High suitability for regions where communication delay requirements are high.
- Low suitability for regions where large communication capacity is required.
- Low suitability for regions with large peak data amount of communications.
- Low suitability for regions with many devices (wireless communication terminals).
- 1 AP integrated controller
- 2 a, 2 b Communication control apparatus (communication control device)
- 3 Software wireless AP
- 7 AP integrated controller
- 8 Software wireless AP
- 10 Global wireless scheme storage
- 11 Global scheduler
- 12 Global wireless AP assignment unit
- 13 AP management DB
- 14 Wireless scheme file download control unit
- 20 a, 20 b Local wireless scheme storage
- 21 a, 21 b Local scheduler
- 23 a, 23 b Regional characteristics/wireless scheme mapping DB
- 24 a, 24 b Cache control unit
- 25 a Environment measurement unit
- 26 b Assignment DB
- 31 Wireless scheme file download unit
- 32 Wireless scheme file setting unit
- 33 Software unit
- 34 Wireless scheme hardware setting download unit
- 35 Wireless scheme hardware setting unit
- 36 Hardware unit
- 70 Global wireless scheme storage
- 71 Global scheduler
- 72 Global wireless AP assignment unit
- 73 AP management DB
- 74 Download control unit
- 81 Wireless scheme file download unit
- 82 Wireless scheme file setting unit
- 83 Software unit
- 84 Wireless scheme hardware setting download unit
- 85 Wireless scheme hardware setting unit
- 86 Hardware unit
Claims (11)
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PCT/JP2019/014946 WO2019203005A1 (en) | 2018-04-16 | 2019-04-04 | Communication control device, communication control method, and communication control system |
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